This site is not new but you can find a couple of highly detailed papercrafts of ships. There's a total of five downloads. There is the 1:250 scale Lightship Ambrose, HMS Dreadnought, Admirable class minesweeper-subchaser and the old V108 Torpedo boat. You can also test the design of the USS Arizona model by building a complete turret with the catapult and Kingfisher floatplane.